const { createOrUpdate, findCarts, updateCarts, removeCarts, selectAllCarts, unselectAllCarts } = require('../service/cart.service')
const { cartFormatError } = require('../constant/err.type')

class CartController {
    async add(ctx) {
        const user_id = ctx.state.user.id
        const goods_id = ctx.request.body.goods_id
        // console.log(user_id, goods_id)
        const res = await createOrUpdate(user_id, goods_id)
        ctx.body = {
            code: 0,
            message: '添加到购物车成功',
            result: res
        }
    }

    async findAll(ctx) {
        const { pageNum = 1, pageSize = 10 } = ctx.request.query
        const res = await findCarts(pageNum, pageSize)
        ctx.body = {
            code: 0,
            message: '获取购物车列表成功',
            result: res
        }
    }

    async update(ctx) {
        const { id } = ctx.request.params
        const { number, selected } = ctx.request.body
        if (number === undefined && selected === undefined) {
            cartFormatError.message = 'number和selected不能同时为空'
            return ctx.app.emit('error', cartFormatError, ctx)
        }
        const res = await updateCarts({ id, number, selected })
        ctx.body = {
            code: 0,
            message: '更新购物车成功',
            result: res
        }
    }

    async remove(ctx) {
        const { ids } = ctx.request.body
        const res = await removeCarts(ids)
        ctx.body = {
            code: 0,
            message: '删除购物车成功',
            result: res
        }
    }

    async selectAll(ctx) {
        const user_id = ctx.state.user.id

        const res = await selectAllCarts(user_id)

        ctx.body = {
            code: 0,
            message: '全部选中',
            result: res
        }
    }

    async unselectAll(ctx) {
        const user_id = ctx.state.user.id

        const res = await unselectAllCarts(user_id)

        ctx.body = {
            code: 0,
            message: '全部不选中',
            result: res
        }
    }


}

module.exports = new CartController()